Lesson Objectives:
By the end of the lesson, students should be able to:
1. describe the effects of forces on the state of rest or motion of a body.
2. describe the effects of forces on the size and shape of a body.
3. identify some examples of forces, including gravitational force, frictional force and magnetic force, and predict their effects on an object.
ICT tools and their value-add for teaching and learning (affordance)
1. Webspiration (students to do concept map and they can review, correct or add on their points)
Instructional Strategies:
Lesson trigger: Give plasticine to students. Ask them what happens when they squeeze it? Further lead them on to breaking the plasticine into 2. So what changes?
1. Show video of man dropping watermelon from the top of a building.
2. Ask students what happened to the watermelon when it is let go?
3. Ask students what caused the watermelon to drop when the person lets go of it?
4. Ask students what happened to the watermelon when it hits the ground?
5. Further stretch the students:
(a) Ask students what they think will happen if a soft cushion bed is placed at the spot where the watermelon lands?
(b) Ask students who will fall faster, a man of smaller mass compared to another man with greater mass?
Show students some other videos which demonstrate the use of other forces such as frictional force, magnetic force and elicit responses from them on the type of forces that are involved.
Go through with them how they are being applied in real life. Eg. friction is needed to move and stop a car. Magnetic forces causes attraction and repulsion.
Get students to draw a concept map (using Webspiration) on the forces that they have just learned. Students to review their classmates' work and add on if there are any additional ones to refine it.
Students to do worksheet on Forces.
Variation:
use object with different mass.
use two bottles and drop it down with different sizes facing down at the same time.
use the video(handphone) to capture the drop and analyse it.
Topic: Forces
Target audience: Lower Secondary Science StudentsLesson Objectives:
By the end of the lesson, students should be able to:
1. describe the effects of forces on the state of rest or motion of a body.
2. describe the effects of forces on the size and shape of a body.
3. identify some examples of forces, including gravitational force, frictional force and magnetic force, and predict their effects on an object.
Thinking Skills
1. Observing
2. Predicting
3. Analysing
ICT tools and their value-add for teaching and learning (affordance)
1. Webspiration (students to do concept map and they can review, correct or add on their points)
Instructional Strategies:
Lesson trigger: Give plasticine to students. Ask them what happens when they squeeze it? Further lead them on to breaking the plasticine into 2. So what changes?
1. Show video of man dropping watermelon from the top of a building.
2. Ask students what happened to the watermelon when it is let go?
3. Ask students what caused the watermelon to drop when the person lets go of it?
4. Ask students what happened to the watermelon when it hits the ground?
5. Further stretch the students:
(a) Ask students what they think will happen if a soft cushion bed is placed at the spot where the watermelon lands?
(b) Ask students who will fall faster, a man of smaller mass compared to another man with greater mass?
Show students some other videos which demonstrate the use of other forces such as frictional force, magnetic force and elicit responses from them on the type of forces that are involved.
Go through with them how they are being applied in real life. Eg. friction is needed to move and stop a car. Magnetic forces causes attraction and repulsion.
Get students to draw a concept map (using Webspiration) on the forces that they have just learned. Students to review their classmates' work and add on if there are any additional ones to refine it.
Students to do worksheet on Forces.
Variation:
use object with different mass.
use two bottles and drop it down with different sizes facing down at the same time.
use the video(handphone) to capture the drop and analyse it.